ruby on rails - Am i missing how the graph api works -

I am using, which is just a cover for the Facebook graph API. I am trying to post something for logged users facebook wall. This work seems very simple but I am having these problems

  graph = HyperGraph.new ("some tokens"). Get ('me') = & gt; {: Last_name = & gt; "Jones" ,: Updated_time = & gt; Fri Aug 06 22:27:03 -0400 2010 ,: Email = & gt; "Jones11@gmail.com" ,: Locale = & gt; "En_US" ,: Link = & gt; "Http://www.facebook.com/matt.jones" ,: Verified => The truth is, first_name = & gt; "Matt" ,: Timezone => -4 ,: name = & gt; Matt Johns ",: Birthday =>" Post: (Comments: - Message = & gt; 'Durion is Harmful to Taste') FacebookError: OAuthException - (# 100) (04/22/1985),: id => 503888340} graph.object ('503888340'). Invalid fade  

How do I post a message on my wall

Place of try: with comment: feed